Smartphone (PPP-)RTK first results and challenges · Rinex Logger Insights from the past two years:...

Geo++ GmbH30827 Garbsen, Germany

www.geopp.de

Smartphone (PPP-)RTK – first results and challenges

Jannes B. Wübbena

© 2019 Geo++® GmbH

Our Activities on Android Raw Data

© 2019 Geo++® GmbH

Geo++ Rinex Logger High Accuracy Applications

Rinex Logger

© 2019 Geo++® GmbH

July 17: Released on Google Play

Sep 18: Dual frequency support

Aug 18: Rinex 3 support

Mar 19: „Foreground Service“ Capability

Installs by manufacturer:31 % - Samsung21 % - Huawei20 % - Xiaomi

Rinex Logger

Insights from the past two years:

• API implementation varies strongly between device, chipset and firmware

• Active community, giving lots of feedback

• Mostly researchers, especially students

© 2019 Geo++® GmbH

Thanks for the Feedback! Keep it coming…

Positioning tests at Geo++

© 2019 Geo++® GmbH

Positioning tests at Geo++ - Zero Baseline

© 2019 Geo++® GmbH

splitter

referencereceiver

rf enclosure

smartphone

RTK engine

Positioning tests at Geo++ - Zero Baseline

© 2019 Geo++® GmbH

Positioning tests at Geo++ - Short Baseline

© 2019 Geo++® GmbH

referencereceiver

rf enclosure

smartphone RTK engine

Positioning tests at Geo++ - Short Baseline

© 2019 Geo++® GmbH

Positioning tests at Geo++ - Virtual Reference Station

© 2019 Geo++® GmbH

Virtual reference

rf enclosure

smartphone RTK engine

Access to the reference station network was provided by the Landesamt für Geoinformation und Landesvermessung Niedersachsen (LGLN).

Positioning tests at Geo++ - Virtual Reference Station

© 2019 Geo++® GmbH

Positioning tests at Geo++ - Smartphone Antenna

© 2019 Geo++® GmbH

referencereceiver

RTK engine

Positioning tests at Geo++ - Smartphone Antenna

© 2019 Geo++® GmbH

Positioning tests at Geo++ - Mitigating Multipath

© 2019 Geo++® GmbH

referencereceiver

RTK engine

Positioning tests at Geo++ - Mitigating Multipath

© 2019 Geo++® GmbH

cm - level positioning on smartphones…

… is possible

… but challenging

… would work much better with good antennas

dm – level positioning is much easier …

© 2019 Geo++® GmbH

© 2019 Geo++® GmbH

Thanks for your Attention

© 2019 Geo++® GmbH

Francesco Darugna

Akira Ito

Contact:jannes.wuebbena@geopp.de

The Team: